Countertop filter



FIG. 1 is a front elevational view of a countertop filter showing my new design;

FIG. 2 is a right side elevational view thereof; the left side elevation being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view of a second embodiment thereof the rear elevational view being a mirror image; and,

FIG. 7 is a right side elevational view of a second embodiment thereof, the left side elevational view being a mirror image and the remaining views being identical to those of the first embodiment.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

I claim the ornamental design for a countertop filter, as shown and described. 